Table 7 The angle of the tangent between the handle and the cup wall (∠), the height of the tangent point (y) and its offset from the center axis (x)

1

32°

1.6

1.8

53°

3.5

6.5

2

39°

1.2

2.1

34°

3

4.8

3

54°

1.7

3.3

60°

6.5

6.9

4

41°

1.6

1.8

61°

6

7.1

5

28°

1

2

26°

4.5

4.2

6

53°

8.8

5.4

90°

14.8

12

7

30°

2.7

2.1

43°

3.7

7

8

23°

2.8

1.8

50°

3.4

6.8

9*

48°

7.5

2.9

90°

9.5

8.3

10

48°

17.1

8.5

90°

28

22.5

11

51°

6

3.4

73°

10.2

8.4

12

58°

6.6

3.2

90°

9

8.7

13

49°

11.8

5.8

90°

15.6

13.4

14

27°

7.3

5.3

79°

8.8

10.4

15^a

36°

3.4

1.8

72°

2

2.2

16^a

34°

5.4

2.6

88°

2.1

4.4

17^a

48°

6

3.1

90°

11.1

4.3

18^a

39°

6.4

4

90°

11

4.4

19^a

34°

3.9

2.7

50°

2.3

2.7

20^a

44°

2.9

1.6

68°

1.7

2.3

21

34°

5.3

3.3

90°

9

4.1

22^a

38°

4.1

3.6

73°

3.7

2.9

23^a

53°

5.2

3.5

88°

2.1

3.8

Average

41°

5.2

3.3

71°

7.4

6.7

Middle value

39°

5.2

3.1

73°

6

4.8